종중국해 북부 해저면층 혼합

Title
종중국해 북부 해저면층 혼합
Alternative Title
Near-Bottom Mixing in the Northern East China Sea
Author(s)
이재학; 장성태; 홍창수
KIOST Author(s)
Lee, Jae Hak(이재학)
Publication Year
2007-10-13
Abstract
Shipboard ADCP, CTD and MSP (microstructure profiler) observations were made in the continental shelf in the East China Sea in August 2005, August 2006 and August 2007. The data sets reveal variable bottom mixed layer heights with 5 ~ 15 m as well as the surface mixed layer. The turbulent kinetic energy dissipation rates near the bottom are high with typically O(10-7 Wkg-1) but occasionally close to 10-6 Wkg-1 and corresponding vertical eddy diffusivities reach to 10-2 m2s-1. High values of dissipation rate and vertical diffusivity are consistent with high turbidity especially in the shallow region. The data from repeated MSP castings and vessel mounted ADCP observations for 5 hours in 2005 and 25 hours in 2006 show that episodic intrusions of enhanced near-bottom turbulence into the upper layers of water column. Good correlation between the height of bottom mixed layer and the phase of tidal current indicates near-bottom mixing in the region occurs mainly due to the tidal stirring.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/30303
Bibliographic Citation
The 7th International Symposium on the Marine Sciences of the Yellow Sea and East China Sea, pp.30, 2007
Publisher
인하대, 국제황해학회,중국과학원 해양연구소
Type
Conference
Language
English
Publisher
인하대, 국제황해학회,중국과학원 해양연구소
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